I don't think not buying will make any difference, because cards are selling quickly, even at double RRP in some cases.
In theory, the 2nd hand prices of cards should improve next year, if GPU mining loses it's appeal and owners start selling multiple cards in the thousands, so 2nd hand might provide the best value, overall.
Or, you could wait for the next gen, if you can't get an RTX 3000 FE card.
In raw GPU power, the Series S console is by far the best deal this year. Or, the digital version of the PS5, if you can find one at rrp, either console can easily handle 1080p gaming.